IMAGE PROCESSING DEVICE AND IMAGE PROCESSING PROGRAM

Title:

IMAGE PROCESSING DEVICE AND IMAGE PROCESSING PROGRAM

Document Type and Number:

WIPO Patent Application WO/2005/112470

Kind Code:

A1

Abstract:

An image processing device and program having a structure enabling high-accuracy interpolation making a less side-effect even if there is a variation in sensitivity of the sensor. The output of a single-chip Bayer pattern CCD (102) is subjected to AD conversion and noise reduction, and then inputted into a G interpolation circuit (106). The G interpolation circuit (106) includes two interposition circuits of different types. An interpolation circuit B (114) conducts interpolation not reflecting the apparent sensitivity differences caused in the pixel values of the G pixels of the single-chip Bayer pattern CCD (102) on the result but having an inferior resolution; contrarily an interpolation circuit A (113) conducts interpolation reflecting the apparent sensitivity differences as they are on the result but having an excellent resolution. The G interpolation circuit (106) estimates the amount of sensitivity difference of the pixel of interest, combines the outputs of the two interpolation circuits so that the result of the interpolation circuit B (114) may be used more often if the sensitivity difference is large and the result of the interpolation circuit A (113) may be used more often if it is small, and outputs the final result.

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Inventors:

TSUKIOKA TAKETO (JP)

Application Number:

PCT/JP2005/008827

Publication Date:

November 24, 2005

Filing Date:

May 10, 2005

Export Citation:

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Assignee:

OLYMPUS CORP (JP)
TSUKIOKA TAKETO (JP)

International Classes:

G06T5/00; G06T1/00; H04N1/409; H04N1/48; H04N9/04; H04N9/07; H04N101/00; (IPC1-7): H04N9/07

Foreign References:

JPH07236147A	1995-09-05
JPH08298669A	1996-11-12
JP2003230158A	2003-08-15
JP2005160044A	2005-06-16
JPH04140992A	1992-05-14
JP2002238057A	2002-08-23
JP2004363902A	2004-12-24

Attorney, Agent or Firm:

Iitaka, Tsutomu (Ueno-Suzuki Bldg. 7th Floor 16-3, Ueno 3-Chom, Taito-Ku Tokyo, JP)

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